Dear koi friend,
I am in the process of making a cover for my filter pit.
The dimensions of the opening are 170 cm wide and 435 cm long.
The plan is to open the cover manually with the help of a gas shock absorber.
The frame would be made of galvanized profiles to which i would attach WPC decking.
How to perform waterproof cover ? I am also thinking of splitting the lid into two independent sections. How do I make the watertight joint of these two sections? The goal is also to be able to walk on the cover when it is closed, how much distance can I make between the profiles in the substructure without being able to bear the weight? Whether the entire cover needs to be tilted in order to be able to drain rainwater ?
Please your opinions and advice or some picture of who performed something similar.
Thanks!!!!